Matches in SemOpenAlex for { <https://semopenalex.org/work/W4248432812> ?p ?o ?g. }
Showing items 1 to 72 of
72
with 100 items per page.
- W4248432812 endingPage "115" @default.
- W4248432812 startingPage "105" @default.
- W4248432812 abstract "Barnes, H.L. and Lavery, N.G., 1977. Use of primary dispersion for exploration of Mississippi Valley-type deposits. J. Geochem. Explor., 8: 105 115. In unmineralized, carbonate rocks of the Wisconsin district, the Zn content is less than 4.7 ppm and varies with the clay content. Therefore, by subtracting an amount proportional to the clay content from the analysis of unweathered mineralized samples, the remainder is the amount of Zn added hydrothermally. These adjusted analyses reveal that the lateral extent of primary hydrothermal dispersion is a function of the width of the adjacent sulphide vein and may extend to at least 53 m from a major orebody. The adjusted concentration and its gradient are indicators of the distance to, and size of, veins in this district. The utility of this relationship for exploration depends upon optimizing several factors to maximize the probability of detecting any orebody in the area searched at minimum cost. To detect orebodies with a minimum width of 1 m, the optimum sampling interval was found to be 9 m with a threshold concentration of 5 ppm Zn (adjusted value). This combination achieves a 95% probability of detecting any orebody over 1 m thick within the area sampled. There is a 27% probability that a consecutive pair of samples might be anomalous due to sampling within the narrow dispersion of two random fractures or minor veins. A second cycle of samples taken midway between each pair of anomalous samples eliminate such false anomalies. Where samples can be collected across the trend of orebodies, either through potentially transecting drill core or along apparently barren drifts, the cost of testing an apparently barren 300-m section is roughly equivalent to that of 12 m of diamond drilling. This procedure complements a drilling programme by greatly increasing the probability of detecting orebodies at minimum cost for those areas where the initial, background metal concentration can be reliably established either from its constancy in the host rock or by a normalizing procedure such as that used here." @default.
- W4248432812 created "2022-05-12" @default.
- W4248432812 creator A5019983560 @default.
- W4248432812 creator A5048212792 @default.
- W4248432812 date "1977-01-01" @default.
- W4248432812 modified "2023-09-25" @default.
- W4248432812 title "Use of Primary Dispersion for Exploration of Mississippi Valley-Type Deposits" @default.
- W4248432812 doi "https://doi.org/10.1016/b978-0-444-41653-7.50014-7" @default.
- W4248432812 hasPublicationYear "1977" @default.
- W4248432812 type Work @default.
- W4248432812 citedByCount "0" @default.
- W4248432812 crossrefType "book-chapter" @default.
- W4248432812 hasAuthorship W4248432812A5019983560 @default.
- W4248432812 hasAuthorship W4248432812A5048212792 @default.
- W4248432812 hasConcept C113196181 @default.
- W4248432812 hasConcept C120665830 @default.
- W4248432812 hasConcept C121332964 @default.
- W4248432812 hasConcept C127313418 @default.
- W4248432812 hasConcept C140779682 @default.
- W4248432812 hasConcept C144024400 @default.
- W4248432812 hasConcept C149923435 @default.
- W4248432812 hasConcept C151730666 @default.
- W4248432812 hasConcept C156622251 @default.
- W4248432812 hasConcept C177562468 @default.
- W4248432812 hasConcept C185592680 @default.
- W4248432812 hasConcept C191897082 @default.
- W4248432812 hasConcept C192562407 @default.
- W4248432812 hasConcept C199289684 @default.
- W4248432812 hasConcept C2780659211 @default.
- W4248432812 hasConcept C2908647359 @default.
- W4248432812 hasConcept C41093919 @default.
- W4248432812 hasConcept C43617362 @default.
- W4248432812 hasConcept C73269764 @default.
- W4248432812 hasConcept C94915269 @default.
- W4248432812 hasConceptScore W4248432812C113196181 @default.
- W4248432812 hasConceptScore W4248432812C120665830 @default.
- W4248432812 hasConceptScore W4248432812C121332964 @default.
- W4248432812 hasConceptScore W4248432812C127313418 @default.
- W4248432812 hasConceptScore W4248432812C140779682 @default.
- W4248432812 hasConceptScore W4248432812C144024400 @default.
- W4248432812 hasConceptScore W4248432812C149923435 @default.
- W4248432812 hasConceptScore W4248432812C151730666 @default.
- W4248432812 hasConceptScore W4248432812C156622251 @default.
- W4248432812 hasConceptScore W4248432812C177562468 @default.
- W4248432812 hasConceptScore W4248432812C185592680 @default.
- W4248432812 hasConceptScore W4248432812C191897082 @default.
- W4248432812 hasConceptScore W4248432812C192562407 @default.
- W4248432812 hasConceptScore W4248432812C199289684 @default.
- W4248432812 hasConceptScore W4248432812C2780659211 @default.
- W4248432812 hasConceptScore W4248432812C2908647359 @default.
- W4248432812 hasConceptScore W4248432812C41093919 @default.
- W4248432812 hasConceptScore W4248432812C43617362 @default.
- W4248432812 hasConceptScore W4248432812C73269764 @default.
- W4248432812 hasConceptScore W4248432812C94915269 @default.
- W4248432812 hasLocation W42484328121 @default.
- W4248432812 hasOpenAccess W4248432812 @default.
- W4248432812 hasPrimaryLocation W42484328121 @default.
- W4248432812 hasRelatedWork W1862966338 @default.
- W4248432812 hasRelatedWork W1973725583 @default.
- W4248432812 hasRelatedWork W1981500891 @default.
- W4248432812 hasRelatedWork W1983471376 @default.
- W4248432812 hasRelatedWork W1986583923 @default.
- W4248432812 hasRelatedWork W1990782149 @default.
- W4248432812 hasRelatedWork W2057288013 @default.
- W4248432812 hasRelatedWork W2164027811 @default.
- W4248432812 hasRelatedWork W2373954421 @default.
- W4248432812 hasRelatedWork W4320523533 @default.
- W4248432812 isParatext "false" @default.
- W4248432812 isRetracted "false" @default.
- W4248432812 workType "book-chapter" @default.